文章目录
- 问题描述
- 解决方法
- ① 修改网卡、DNS等
- ② 更改配置文件
问题描述
yum update 时出现以下问题。
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
One of the configured repositories failed (Unknown),
and yum doesn't have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work "fix" this:
1. Contact the upstream for the repository and get them to fix the problem.
2. Reconfigure the baseurl/etc. for the repository, to point to a working
upstream. This is most often useful if you are using a newer
distribution release than is supported by the repository (and the
packages for the previous distribution release still work).
3. Run the command with the repository temporarily disabled
yum --disablerepo=<repoid> ...
4. Disable the repository permanently, so yum won't use it by default. Yum
will then just ignore the repository until you permanently enable it
again or use --enablerepo for temporary usage:
yum-config-manager --disable <repoid>
or
subscription-manager repos --disable=<repoid>
5. Configure the failing repository to be skipped, if it is unavailable.
Note that yum will try to contact the repo. when it runs most commands,
so will have to try and fail each time (and thus. yum will be be much
slower). If it is a very temporary problem though, this is often a nice
compromise:
yum-config-manager --save --setopt=<repoid>.skip_if_unavailable=true
Cannot find a valid baseurl for repo: base/7/x86_64
解决方法
① 修改网卡、DNS等
进入以下目录：
cd /etc/sysconfig/network-scripts配置 ifcfg-eth0 文件（网卡不同，文件名可能不同），内容如下：
vim ifcfg-eth0
然后再添加 DNS1=8.8.8.8 语句，保存退出。
输入以下命令重启网卡：
service network restart如果还不行，看下一步 👇
② 更改配置文件
进入以下目录
cd /etc/yum.repos.d/输入以下命令使失效
mv CentOS-Base.repo CentOS-Base.repo.bak清楚缓存、生成缓存
# 清除缓存
yum clean all
# 生成缓存
yum makecache再改回来
mv CentOS-Base.repo.bak CentOS-Base.repoyum update 成功
